Artificial piezoelectric grass for energy harvesting from turbulence-induced vibration

The primary objective of this research is to develop a deploy-and-forget energy harvesting device for use in low-velocity, highly turbulent fluid flow environments i.e. streams or ventilation systems. The work presented here focuses on a novel, lightweight, highly robust, energy harvester design referred to as piezoelectric grass. This biologically inspired design consists of an array of cantilevers, each constructed with piezoelectric material. When exposed to proper turbulent flow conditions, these cantilevers experience vigorous vibrations. Preliminary results have shown that a small array of piezoelectric grass was able to produce up to 1.0 mW per cantilever in high-intensity turbulent flow having a mean velocity of 11.5 m s 1 . According to the literature, this is among the highest output achieved using similar harvesting methods. A distributed parameter model for energy harvesting from turbulence-induced vibration will be introduced and experimentally validated. This model is generalized for the case of a single cantilever in turbulent cross-flow. Two high-sensitivity pressure probes were needed to perform spectral measurements within various turbulent flows. The design and performance of these probes along with calibration and measurement techniques will be discussed. (Some figures may appear in colour only in the online journal)

[1]  Ephrahim Garcia,et al.  Development of an aeroelastic vibration power harvester , 2009, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[2]  Reza S. Abhari,et al.  High Temperature Fast Response Aerodynamic Probe , 2010 .

[3]  Hyung-Jo Jung,et al.  Feasibility Study on a New Energy Harvesting Electromagnetic Device Using Aerodynamic Instability , 2009, IEEE Transactions on Magnetics.

[4]  V. Jezdinsky,et al.  Measurement of turbulence by pressure probes. , 1966 .

[5]  Daniel J. Inman,et al.  Piezoaeroelastic Modeling and Analysis of a Generator Wing with Continuous and Segmented Electrodes , 2010 .

[6]  M. K. Au-Yang.  Joint and Cross Acceptances for Cross-Flow-Induced Vibration—Part II: Charts and Applications , 2000 .

[7]  Alan Powell,et al.  On the Fatigue Failure of Structures due to Vibrations Excited by Random Pressure Fields , 1958 .

[8]  Cor M. van den Bleek,et al.  Response characteristics of probe-transducer systems for pressure measurements in gas-solid fluidized beds: how to prevent pitfalls in dynamic pressure measurements , 1999 .

[9]  Daniel J. Inman,et al.  Energy Harvesting From Turbulence-Induced Vibration in Air Flow: Artificial Piezoelectric Grass Concept , 2011 .

[10]  S. Choe,et al.  Analysis of Piezoelectric Materials for Energy Harvesting Devices under High-g Vibrations , 2007 .

[11]  S. Priya.  Modeling of electric energy harvesting using piezoelectric windmill , 2005 .

[12]  Onur Bilgen,et al.  Aerodynamic and Electromechanical Design, Modeling and Implementation Of Piezocomposite Airfoils , 2010 .

[13]  Alexander M. Pankonien,et al.  Piezoelectric Artificial Kelp for Energy Harvesting , 2010 .

[14]  D. Newland.  An introduction to random vibrations and spectral analysis , 1975 .

[15]  S. H. Chue,et al.  Pressure probes for fluid measurement , 1975 .

[16]  C. Crowe,et al.  Engineering fluid mechanics , 1975 .

[17]  Christian Roduner,et al.  On the Development and Application of the Fast-Response Aerodynamic Probe System in Turbomachines—Part 1: The Measurement System , 2000 .

[18]  David L. Hu,et al.  Tree-inspired piezoelectric energy harvesting , 2009 .

[19]  Sebastian Pobering.  Energy Harvesting Under Induced Best Conditions , 2011 .

[20]  Kamaldev Raghavan,et al.  VIVACE (Vortex Induced Vibration Aquatic Clean Energy): A New Concept in Generation of Clean and Renewable Energy From Fluid Flow , 2008 .

[21]  Peter Kupferschmied,et al.  Aerodynamic Fast-Response Probe Measurement Systems: State of Development, Limitations and Future Trends , 1997 .

[22]  Alper Erturk,et al.  Electromechanical Modeling of Piezoelectric Energy Harvesters , 2009 .

[23]  Yiannis Andreopoulos,et al.  Experimental Study of a Self-Excited Piezoelectric Energy Harvester , 2010 .

[24]  H. H. Bruun,et al.  Hot-Wire Anemometry: Principles and Signal Analysis , 1996 .

[25]  M. K. Au-Yang,et al.  Flow - induced vibration of power and process plant components , 2001 .

[26]  Daniel J. Inman,et al.  A Distributed Parameter Electromechanical Model for Cantilevered Piezoelectric Energy Harvesters , 2008 .

[27]  N. Elvin,et al.  Energy Harvesting from Highly Unsteady Fluid Flows using Piezoelectric Materials , 2010 .

[28]  Siak Piang Lim,et al.  Modeling and analysis of micro piezoelectric power generators for micro-electromechanical-systems applications , 2004 .

[29]  Naoshi Kuratani,et al.  Unsteady Pressure Measurement with Pressure Sensitive Paint , 2000 .

[30]  Hyeoungwoo Kim,et al.  Small scale windmill , 2007 .

[31]  Mk Au-Yang,et al.  Flow-Induced Vibration of Power and Process Plant Components: A Practical Workbook , 2001 .

[32]  Shigeru Obayashi,et al.  Multiobjective Design Study of a Flapping Wing Power Generator , 2008 .

[33]  Atanas A. Popov,et al.  A geometric parameter study of piezoelectric coverage on a rectangular cantilever energy harvester , 2011 .

[34]  Roger W. Ainsworth,et al.  Unsteady Pressure Measurement , 2000 .

[35]  H. Bergh,et al.  Theoretical and experimental results for the dynamic response of pressure measuring systems , 1965 .

[36]  R. Blevins,et al.  Formulas for natural frequency and mode shape , 1984 .

[37]  Ephrahim Garcia,et al.  Energy harvesting: a key to wireless sensor nodes , 2009, International Conference on Smart Materials and Nanotechnology in Engineering.

[38]  Kamaldev Raghavan,et al.  VIVACE (Vortex Induced Vibration Aquatic Clean Energy): A New Concept in Generation of Clean and Renewable Energy From Fluid Flow , 2006 .